Putting this here as well:
I have put this together to hopefully explain how to install the Circle of Eight mod to Temple of Elemental Evil to people who are as useless at I am with macs. There may be better ways of doing this, but this is the way I did it. Hopefully it works for you too.
Step 1: Download and install Temple of Elemental Evil.
Step 2: Download the Mod. You can get it here:
Standard Edition:
http://www.moddb.com/mods/circle-of-eight-modpack/downloads/circle-of-eight-modpack-800-standard-edition New Content Edition:
http://www.moddb.com/mods/circle-of-eight-modpack/downloads/circle-of-eight-modpack-800-new-content-edition Step 3: Open the Temple of Elemental Evil package [right click, show package contents].
Step 4: Copy the mod file from your downloads folder to the Temple of Elemental Evil package (something like Circle_of_Eight_Modpack_8.0.0_New_Content_Edition_Setup.exe). I put it in the folder “drive_c”. The file should be about 500mb.
Step 5: Download a java runtime environment. I got mine from here:
https://www.java.com/en/download/manual.jsp You want the windows version, not the mac one.
Step 6: Open the Temple of Elemental Evil package [right click, show package contents].
Step 7: Copy and past the java installer from your downloads folder to the Temple of Elemental Evil package (something like jre-u55-windows-i586.exe). Again, I put it in the folder “drive_c”.
Step 8: Now you need to install java. Double click on Wineskin. Choose Advanced. Next to Windows.exe click browse. Select the installer (something like jre-u55-windows-i586.exe). To install the program, click “Test Run”. Follow the prompts.
Step 9: Once java is installed, you need to install the modpack. Next to Windows.exe click browse. Select the installer (something like Circle_of_Eight_Modpack_8.0.0_New_Content_Edition_Setup.exe). Again, to install the program, click “Test Run”. Follow the prompts. Make sure you install it in the right folder.
Step 10: Once the modpack is installed, you need to tell wine to run the Temple of Elemental Evil Front End. That is call TFE-X.exe. It should be in the Temple of Elemental Evil Folder.
You can click “Test Run” and hopefully it works. Close down the folder and from now on, when you double click on the file, it should run the Temple of Elemental Evil front end. You can then choose what options you like (such as increasing the level cap, maxing out hp increases, etc) before launching the game.
I hope this explains it and I haven't missed something crucial.
Big thanks to Gydion for patiently explaining to me, using small words that people with low intelligence can understand... :)